نتایج جستجو برای: finite element analysis

تعداد نتایج: 3115043  

A. Asakereh, H. Bazazzadeh,

Limit-equilibrium method (LEM) and finite element method (FEM) with strength reduction method (SRM) techniques are the most widely used analysis tools in slope stability assessment. Recently, researchers have reported that both factor of safety (FOS) values and failure surfaces obtained from LEM and FEM are generally in good agreement, except in some particular cases. In this paper, the FOS and...

Journal: :The Journal of the Acoustical Society of America 2017
Ahmad T Abawi

finite element and boundary methods in structural finite element and boundary methods in structural finite element and boundary methods in structural finite element and boundary methods in structural finite element and boundary methods in structural finite element and boundary methods in structural finite element and boundary methods in structural introduction to finite element vibration analys...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده علوم 1386

چکیده ندارد.

Journal: :journal of dental materials and techniques 0
mohammad javad moghaddas dental research center, department of operative dentistry, faculty of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) hamideh ameri dental research center, department of operative dentistry, faculty of dentistry, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) hossein abachizadeh department of operative dentistry, faculty of dentistry, zahedan university of medical sciences, zahedan, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی زاهدان (zahedan university of medical sciences)

introduction: the aim of this study was to evaluate the effect of proximal contour of class ii composite restorations placed with straight or contoured matrix band using composite resins with different modulus of elasticity on stress distribution by finite element method. methods: in order to evaluate the stress distribution of class ii composite restorations using finite element method, upper ...

Journal: :international journal of automotive engineering 0
r. hosseini m. azadi .m sadeghi hegar .y pournaghi .m shariyat

in the present paper, the modal analysis on a full finite element model of an off-road vehicle. this vehicle was modeled in the catia software and then meshed in the hypermesh software. the free vibration analysis was conducted by the abaqus software. by applying an external displacement, the forced vibration analysis was also performed. as a result, natural frequencies and shape modes were ext...

Journal: :international journal of automotive engineering 0
khalkhali afroosheh seyedi

in this paper, numerical simulation of frp composite cylinder tubes progressive crushing processes is conducted using ls-dyna. details on the numerical modeling strategy are given and discussed. it is found that triggers introduced in the numerical simulation can effectively model the bevel trigger at the end of the tubular specimens. it is also found that two-layer finite element model based o...

Journal: :annals of military and health science research 0
محمد حسین لشکری mohammad hossein lashkari department of surgery, aja university of medical sciences, tehran, iran.تهران عطا کوهیان ata koohian department of physics, university of tehran, tehran, iranتهران کامبیز کنگرلو kambiz kangarlou no 2, 6th st., iranzamin st., shahrak gharb district,tehran,iran.تهران، شهرک غرب، خیابان ایران زمین، خیابان ششم، پلاک 2

purpose: blast-induced traumatic brain injury (btbi) is one of the causes of death or permanent   invalidity which can occur unexpectedly in both military and civilian populations. this study   set out to conduct a combined eulerian-lagrangian computational analysis of the interaction   between a single planar blast wave and a human head in order to assess the extent of intracranial   shock wav...

Journal: :journal of dentistry, tehran university of medical sciences 0
a. hassan ahangari assistant professor, department of prosthodontics, school of dentistry, shiraz university of medical a. geramy associate professor, department of orthodontics, school of dentistry, tehran university of medical s a. valian assistant professor, department of operative dentistry, school of dentistry, shahid beheshti univers

objective: the main goal of this study was to evaluate stress distribution of endodonti-cally treated maxillary central incisors restored with glass fiber posts, composite resin cores, and crowns with different ferrule designs. materials and methods: four three-dimensional models of a maxillary central incisor were modeled in solidworks 2006. tooth with no ferrule, tooth with a 2 mm circumferen...

Journal: :dental research journal 0
mansour rismanchian reza birang mahdi shahmoradi hassan talebi reza jabar zare

background: as various implant geometries present different biomechanical behaviors, the purpose of this work was to study stress distribution around tapered and cylindrical threaded implant geometries using three-dimensional finite element stress analysis.     methods: seven implant models were constructed using the cad system. after digitized models of mandibular section, the crowns were crea...

Stability of underground structures is assessed by comparing rock strength with induced stresses resulted from ground stresses. Rock mass surrounding the opening may fail either by fracture or excessive deformation caused. Accurate calculation of induced stresses is therefore fundamental in the stability analysis of an opening. Although numerical methods, particularly finite element method, are...

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